Mark,

I copied the below from an msg from you last Oct..  Which pin on the PCM did you connect to ground?  The only pin I can find in the instructions for the PCM that is identified as ground is pin 1 which is called out to be connected to pin 16 on the Controller?  Did you splice this wire to ground or did you connect a different pin on the PCM?

“  Keep in mind that I had some data corruption problems similar to Al Gietzen.  It seems to be a problem with fiberglass airplanes, so don't be surprised if you experience this too.  With me, it always  happened while on the ground.  Last time it happened, I looked at each of the 3 tables and saw that only one was actually corrupted, so it is possible that it may have happened in the air, but since I was running above 3800 rpm (and operating in the upper table), I didn't notice any difference.  Nobody really knows what causes this problem, but I seem to have fixed it by running a separate ground from the PCM to the forest-of-tabs ground.  The thought was that the sub-panel was mounted on a fiberglass frame and therefore was isolated from ground.  I have not had an episode since I added the ground.”

Bill B